6.1.1 Types of Pathogens

• What are pathogens capable of causing?

  Disease
• Viruses are non-cellular and contain genetic material enclosed in a protein
• Bacteria are single-celled prokaryotes that replicate through binary fission.
• Match the fungi type with its characteristic:

  Yeast ↔️ Single-celled

  Mould ↔️ Multicellular
• What are the three methods protozoa use for movement?

  Cilia, flagella, pseudopodia
• Pathogens can be classified into four main types
• Match the pathogen type with an example:

  Virus ↔️ Influenza

  Bacteria ↔️ E. coli

  Fungi ↔️ Athlete's foot

  Protozoa ↔️ Malaria
• Bacteria have a chitin cell wall.

  False
• Which type of genetic material is found in viruses?

  DNA or RNA
• Fungi replicate through binary fission
• What is the structure enclosing the genetic material in viruses?

  Protein coat
• Viruses can replicate independently without a host cell.

  False
• Match the pathogen with its replication method:

  Virus ↔️ Requires a host cell

  Bacteria ↔️ Binary fission
• Bacteria replicate through binary fission
• What is the cell wall of fungi made of?

  Chitin
• Viruses are single-celled organisms.

  False
• Protozoa move via cilia, flagella, or pseudopodia
• What type of cell are bacteria?

  Prokaryotic
• Bacteria replicate through the process of binary fission.
• Bacteria are a type of pathogen that can cause diseases.
• Match the pathogen type with its characteristics:

  Bacteria ↔️ Single-celled prokaryotes, cell wall, binary fission

  Viruses ↔️ Non-cellular, require host cell to replicate

  Fungi ↔️ Eukaryotic, chitin cell walls

  Protozoa ↔️ Single-celled eukaryotes, move via cilia
• What are the key characteristics of viruses?

  Non-cellular, require host cell
• Fungi are eukaryotic organisms with chitin cell walls.
• Fungi can be single-celled (yeasts) or multicellular (moulds).
• How do protozoa move?

  Cilia, flagella, pseudopodia
• What are examples of fungal diseases?

  Athlete's foot, thrush
• Protozoa are single-celled eukaryotes that can cause diseases.
• Pathogens are microorganisms capable of causing diseases in a host organism.
• Order the pathogen types from least to most complex:

  1️⃣ Viruses

  2️⃣ Bacteria

  3️⃣ Fungi

  4️⃣ Protozoa
• Match the pathogen type with its characteristics:

  Viruses ↔️ Non-cellular, genetic material in protein coat

  Bacteria ↔️ Single-celled prokaryotes, cell wall

  Fungi ↔️ Eukaryotic with chitin cell walls

  Protozoa ↔️ Single-celled eukaryotes, move via cilia
• What type of pathogens are viruses?

  Non-cellular
• Viruses require a host cell to replicate.
• Viruses contain either DNA or RNA as their genetic material.
• What is the method by which bacteria replicate?

  Binary fission
• Bacteria are single-celled prokaryotes with a cell wall.
• Fungi have cell walls made of chitin.
• What are the two forms that fungi can take?

  Yeasts and moulds
• Protozoa move via cilia, flagella, or pseudopodia.
• Protozoa are single-celled eukaryotic organisms.
• Match the pathogen type with its characteristic:

  Viruses ↔️ Non-cellular, require host cell

  Bacteria ↔️ Single-celled prokaryotes, binary fission

  Fungi ↔️ Eukaryotic with chitin cell walls

  Protozoa ↔️ Single-celled eukaryotes, move via cilia